if (process.execArgv[0] !== "--expose-gc") {
  console.error("please run with node --expose-gc");
  process.exit(1);
}

var async = require("../");
global.gc();
var startMem = process.memoryUsage().heapUsed;

function waterfallTest(cb) {
  var functions = [];

  for(var i = 0; i < 10000; i++) {
    functions.push(function leaky(next) {
      function func1(cb) {return cb(); }

      function func2(callback) {
        if (true) {
          callback();
          //return next();  // Should be callback here.
        }
      }

      function func3(cb) {return cb(); }

      async.waterfall([
        func1,
        func2,
        func3
      ], next);
    });
  }

  async.parallel(functions, cb);
}

function reportMemory() {
  global.gc();
  var increase = process.memoryUsage().heapUsed - startMem;
  console.log("memory increase: " +
    (+(increase / 1024).toPrecision(3)) + "kB");
}

waterfallTest(function () {
  setTimeout(reportMemory, 0);
});
